This post will demonstrate the procedure for calculating percentages in JavaScript.

**How to Calculate Percentages in JavaScript?**

To calculate percentages in JavaScript, utilize basic arithmetic operations, likewise division, and multiplication. The commonly used formula for calculating the percentage is “**(part/whole) * 100**”.

**Example**

Define a function “**calculatePercentage()**” with two parameters “**x**” and “**y**”. Perform arithmetic operations on it. Divide x with y and multiply the answer with 100 to return a percentage of the given numbers:

{

return (x/y)*100;

}

Call the “calculatePercentage()” function by passing numbers “**6**” and “**15**” and “**53**” and “**60**” for percentage:

console.log(calculatePercentage(53, 60) + "%");

**Output**

In the above example, the second output is an irrational decimal number. If you want to get the percentage in decimal points up to a limited number, follow the below section.

**How to Fix the Decimal Point Numbers in Percentage?**

To fix the percentage up to the specific decimal points, use the “**toFixed()**” method:

The given output returns the percentage in 2 decimal points:

Similarly, you can also use the “**toFixed()**” method in the function:

{

return ((x/y)*100).toFixed(3);

}

Finally, call the method for calculating the percentage of the numbers “**53**” and “**60**”:

**Output**

If you want to get the percentage in a whole number, follow the given section.

**How to Calculate Percentages in Whole Numbers?**

To get the percentage in whole numbers instead of decimal points, use the “**Math.round()**” method. It outputs the result in the closest whole integer:

**Output**

We have provided all the necessary instructions related to calculating percentages in JavaScript.

**Conclusion**

To calculate percentages in JavaScript, utilize basic “**arithmetic operations**”, likewise division, and multiplication. For converting irrational decimal points in percentage to particular decimal numbers, use the “**toFixed()**” method. If you need to determine percentages in only whole numbers, utilize the “**Math.round()**” method. This post demonstrated the procedure for calculating percentages in JavaScript.